Wall Street Bonuses + Hamptons Real Estate = Lotsa Moola!

We thought Goldman Sachs CEO Lloyd Blankfein was being rather conservative when he paid only $27 million for an apartment on Central Park West.

Now we hear he’s earmarking more of his record $53 million bonus toward the purchase of a summer place.

Sources tell us that Blankfein is close to buying one of Southampton’s most elaborate estates, which has a $48 million price tag.

Located on exclusive Lake Agawam, the 10.6-acre estate known as Old Trees is owned by financier Donald A. Burns. The property includes a shingled 20,000-square-foot, 13-bedroom mansion and a historic barn with a gym, kitchen and three bedrooms. There’s also a cottage/pool house with three bedrooms, a clay tennis court and a pool with a blue-stone patio.

The main house has lake and ocean views, and includes grand-scale public rooms and a formal dining room with seating for 60.

Blankfein, who is traveling, could not be reached for comment, while his spokesman would not confirm or deny the transaction.